I have an Evcon fossil fuel kit (3024-7481-E) with a coleman/evcon two bulb mercury stat. There's a york heat pump, paired with a coleman furnace. I'd like to put on a honeywall stat, but can't figure out exactly what is what.
I know what the r,y,g,and o are. I'm just not sure what w2, B, X, and L are on the old stat. I would assume one is for the heat pump heat, and one is for the gas/emergency heat, but can't figure it out for sure. please help.